Links

Go here first. The best site for information on building EMT domes.
Includes all the geometric information (strut ratios, number of pieces,
assembly geometry) for frequency 1 through 6 alternate domes, both as
tables/charts, and also in the form of slick javascript calculators.
"Conduit Dome Tips"
page is the essential step-by-step walkthrough of how to do it.
I suspect that this site is responsible for the existence of most of the
EMT domes in the free world.

An excellent walkthrough of a dome construction with some good ideas
not found in http://www.desertdomes.com/, including using carraige bolts to avoid an outside surface that snags/cuts
the covering, and a nice shelf added to the interior of the structure.
Good shots of the shop setup and jigs. As his next project this guy spearheaded the
construction of a
giant nose-shaped structure also made of EMT triangles ---
i got to go inside it, and it came out great!

Yes, this guy is a geek. Good discussion of how much extra length to
add to account for the bending at the end (answer: probably not enough to
worry about in practicality, but it's good to know that) and an idea
for an entrance modification. He also has a useful
step-by-step walkthrough of how he made his dome.

Very good step-by-step for this large dome which has a somewhat
detailed design for the covering, plus an interesting "rain hat" top vent.
Good ideas if you have more time and want to make your dome nicer.
Lots of excellent photos.
For once, someone from Stanford doing something useful. ;)

This guy mostly followed the Desert Domes instructions, but he's got nice
photos of his shop jigs. Nice simple covering with a single tarp.
If you're initimidated by the idea of making a dome, this guy makes it
look easy.